task stopService {}
task startService {}
task doUpdateA { // change something about the service }
task doUpdateB { // change something else about the service }

task updateA {
    inputs.files <some inputs>
    output.upToDateWhen { true }
    // i.e. run whenever inputs changed from previous run

    dependsOn stopService
    dependsOn doUpdateA
    dependsOn startService

    // ensure the service is stopped while it's being modified
    doUpdateA.mustRunAfter stopService
    startService.mustRunAfter doUpdateA
}


task updateB {
    inputs.files <some inputs>
    output.upToDateWhen { true }
    // i.e. run whenever inputs changed from previous run

    dependsOn stopService
    dependsOn doUpdateB
    dependsOn startService

    // ensure the service is stopped while it's being modified
    doUpdateB.mustRunAfter stopService
    startService.mustRunAfter doUpdateB
}

task updateAll {
    dependsOn updateA
    dependsOn updateB
}

doLast {
        stopService.execute()
        doUpdateB.execute()
        startService.execute()
    }
}

task updateAll {
    inputs.files <some inputs>
    output.upToDateWhen { true }
    // i.e. run whenever inputs changed from previous run

    dependsOn stopService
    dependsOn doUpdateA
    dependsOn doUpdateB
    dependsOn startService

    doUpdateB.mustRunAfter stopService
    startService.mustRunAfter doUpdateB
    doUpdateA.mustRunAfter stopService
    startService.mustRunAfter doUpdateA
}